nav{
    background-color: #5bc0de;
}

form{
    border:#2aabd2 solid 2px;
    border-radius: 5%;
    padding: 15px;
    background-color: #5bc0de;
}
section{
    width: 100%;
    height: 515px;
    background-image: url("../image/caochang.jpg");
    background-repeat:no-repeat;
    background-size: 100% 100%;
}
nav{
    background-color: #5bc0de;
}
.well{
    background-color: #D3D3D3;
    margin-top: 4px;
    margin-bottom: 0;
}
#from-check{
    width: 390px;height: 280px
}